US 8,773,871 B2
Method and apparatus for sensing multiple voltage values from a single terminal of a power converter controllerGeneral
US 8,773,871 B2
Method and apparatus for sensing multiple voltage values from a single terminal of a power converter controller
Tech Center:
2800 Semiconductors/Memory, Circuits/Measuring and Testing, Optics/Photocopying, Printing/Measuring and Testing
Examiner:
Adolf Berhane
Art Unit:
2838 Electrical Circuits and Systems
Inventors:
Balu Balakrishnan; Alex B. Djenguerian
Assignee:
Priority:
04/06/07
Filed:
02/26/13
Granted:
07/08/14
Expiration:
08/15/22
Abstract
A controller for use in a power converter includes a sensor coupled to receive a signal from a single terminal of the controller. The signal from the single terminal represents an output voltage of the power converter during at least a portion of an off time of a power switch and a line input voltage during a portion of an on time of the power switch. A switching control is to be coupled to switch the power switch to regulate the output of the power converter in response to the sensor. A power limiter is coupled to the sensor to output a power limit signal to the switching control in response to the line input voltage of the power converter. The switching control is further coupled to switch the power switch to regulate the output of the power converter in response to the power limit signal.
Cooperative Patent Classification (CPC)
H02H02M3/33523H02M